P201913 - TroubleshootingP201913-故障诊断

Fault code description故障码说明

DTC故障码(DTC)	Fault code description故障码描述	Possible cause of failure可能故障原因
P201913	ITS gas-liquid separator inlet refrigerant temperature sensor open circuitITS气液分离器入口冷媒温度传感器开路	1. The refrigerant temperature sensor at the inlet of the gas-liquid separator is open circuit1.气液分离器入口冷媒温度传感器开路

Troubleshooting steps故障诊断步骤

①General inspection一般检查

1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Check the gas-liquid separator inlet refrigerant temperature sensor wiring harness for damage, breakage, loose connection, etc.检查气液分离器入口冷媒温度传感器线束是否存在损坏、断裂、虚接等现象。 3. Check the gas-liquid separator inlet refrigerant temperature sensor harness connector for loose connection or damage.检查气液分离器入口冷媒温度传感器线束接插件是否存在虚接、损坏等现象。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 2.去步骤2。 No否 Repair or replace the gas-liquid separator inlet refrigerant temperature sensor harness or connector.维修或更换气液分离器入口冷媒温度传感器线束或接插件。

②Check the refrigerant temperature sensor at the gas-liquid separator inlet检查气液分离器入口冷媒温度传感器

1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Disconnect the gas-liquid separator inlet refrigerant temperature sensor harness connector.断开气液分离器入口冷媒温度传感器线束接插件。 3. Use a digital multimeter to measure the resistance of the refrigerant temperature sensor at the inlet of the gas-liquid separator.用数字万用表测量气液分离器入口冷媒温度传感器的电阻。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 3.去步骤3。 No否 Replace the refrigerant temperature sensor at the gas-liquid separator inlet.更换气液分离器入口冷媒温度传感器。

③Check the refrigerant temperature sensor circuit at the gas-liquid separator inlet检查气液分离器入口冷媒温度传感器线路

1. Check whether the refrigerant temperature sensor circuit at the inlet of the gas-liquid separator is open.检查气液分离器入口冷媒温度传感器线路是否开路。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 4.去步骤4。 No否 Repair or replace the gas-liquid separator inlet refrigerant temperature sensor wiring harness.维修或更换气液分离器入口冷媒温度传感器线束。

④Replace the refrigerant valve island assembly更换冷媒阀岛总成

1. Replace the refrigerant valve island assembly and check whether the fault code and symptoms are eliminated.更换冷媒阀岛总成，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Go to step 5.去步骤5。

⑤Replacing the thermal management integrated module更换热管理集成模块

1. Replace the thermal management integrated module with a new one and check whether the fault code and symptoms are eliminated.更换新的热管理集成模块，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Look for causes from other symptoms.从其他症状查找原因。   Caution:注意： ♦  After replacing the thermal management integrated module, you need to use a diagnostic instrument to recalibrate the thermal management integrated module.更换热管理集成模块后，需用诊断仪对热管理集成模块重新标定。